5/12/2012 1:39 PM | |
Posts: 205 Rating: (11) |
Hi expert, i wanted to know about PI controller of 6RA70 drive???? what is excatly happen with parameter setting of p225& p226 ????? |
5/18/2012 6:51 AM | |
Posts: 205 Rating: (11) |
Hi KSN, thanks for your repaly i will try this tell you later.... |
5/18/2012 6:52 AM | |
Posts: 205 Rating: (11) |
Hi PISCEAN 2010, thnaks for replay.... |
5/19/2012 11:22 AM | |
Joined: 8/25/2006 Last visit: 10/14/2024 Posts: 2209 Rating: (279) |
Have you tried P-gain adaptation at slow speed? |
5/20/2012 7:35 AM | |
Joined: 4/23/2010 Last visit: 12/31/2023 Posts: 8092 Rating: (877) |
Hello sparten, Please check the tacho as explained in my earlier post. 6RA70 is digital drive & earlier was analoge. Technology wisethere is vast difference. I know from my past exprienece, that whenever there is change in technology, such type of resistence do occur. (As your customer says, with the older drive machine was running smoothly & hence expecting the same or even better performance from the new drive.) Nothing is wrong. Butfor this new technology drive to perform, it also needs best quality feedbacks & inputs. Socheck the analogue tacho out put wave form at low RPM, check for rippls in out put waveform, also check linearity of tacho out put. Talk with technical person at customer. Explain him about the technical requirements of drive to perform. I hope, the concrened person will also agree. In most cases, I have found asover periods of utilisation, mostly analogue tacho out putis not linear, either at lower or upper speed range. May be carbon brusehes are worn out more than the limit, excessive carbon dust or commutator, dry soldering at commutator segments, uneven spring presssure, or flexible coupling problem & so on. Please check the value at P745 & check by increasing the same. (P745= filter time at actual analogue value) Regards, DEEP. P.S.I presumed thatspeed, current & field optimisation tests are carried out. Moreover please reply whether you have adjusted the gain values suggested by Mr. KSN All the best. |
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